Mine-door-operating mechanism



G. BOGGIO.

MINE DOOR OPERATING MECHANISM.

APPLICATION FILED NOV-26,1919.

1 76,248. v Pat ted M1126, 1921.

2 SHEETS-SHEET I.

w v \if gmuawtoz We I; J 5 5M510 UNITED STATES GIUSTO BOGGIO, OF ROYALEON, ILLINOIS.

ltIINE-DOOB-OPERATIITG IfIECHANISI/I.

Specification of Letters Patent.

Patented Apr. 26, 1921.

Application filed November 26, 1919. Serial No. 340,833.

T 0 (ZZZ whom "it may concern Be it known that I, Grnsro Borrow, a citi- Zen of the Unit :l States, residing at Royalton, in the county of Franklin and State of Illinois, have invented. certain new and useful Improvements in Mine-Door-Operating Mechanism, of which the following is a specification.

This invention relates to mine doors and means for opening them.

The object of the invention is to provide a door of this character equippec with a simple and erficient means whereby it may be readily opened by a car approaching in either direction and which will automatically close after the passage of a car.

Another object is to so construct such a door that it may be either automatically opened by a car or manually opened should the operating mechanism become inefiective for any reason.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed ay be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings:

Figure 1 represents a top plan view of a mine door with track rails passing through and equipped with this improved operating mechanism.

Fig. 2 is a side elevation taken from the right hand side of the tracks shown in Fig. l, and

dig. 3 is a detail cross sectional view.

In the embodimen illustrated, a pair of track rails R are shown mounted on the usual cross ties T and having arranged between them auxiliary rails 1 and 2' which pass through the doorway of the mine shown at 5 and extend one in on direction and the other in the opposite direction with block 3 arranged at the outer end of each, said block having cut-away or bevel corners 4: to facilitate mountin of the car on the track rails B, should it ror any reason become derailed.

Arranged on opposite sides of the track rails R are two upstanding posts 6 connected at their upper ends by a cross bar 7 which constitutes the doorway of the mine and between these posts is mounted to swing from a shaft 8 a door 40. The shaft 8 extends through bearings 11 carried by the upper edge of the door 10 and through the posts 6, being provided at its ends with crank arms 9 and 10 having lateral terminals 11 and 12. The crank arms 9 and 10 are disposed at an oblique angle in relation to the shaft 8, one in one direction and the other in the opposite direction, for a purpose presently to be described.

Cylinders 13 and 14: are carried by the lateral extensions 1 and 12 of arms 9 and 10, such extensions passing transversely through the upper ends of said cylinders.

Arranged within the cylinders 13 and 14 are coiled springs 15, and plunger rods 16 and 17 are extended into said cylinders and each has a reduced end 18 on which the coil springs 15 are mounted, said springs bearat one end against the inner end Wall of each cylinder and at its other end against a shoulder 19 formed at the base of the reduced extension 18. These springs 15 exert their tension to normally force the plungers 16 and 17 out of the cylinders, the purpose of which will be presently described.

As shown, the cylinder 13 is mounted on the right side of the track and the one 14 on the left side thereof. A. lever 20 is fullcrumed intermediately or" its ends on the outer face of the post 6 at the right side of the track and has at one end a laterally and outwardly extending arm 21 which passes through the lower end of the plunger 16 and is secured and connected therewith by means of a nut 22. The other end of lever 20 has an arm 23 extending laterally inward across a longitudinally disposed slot 2 L formed in the post 6.

A bar 26 is pivoted at 27 to the outer face of one track rail and has its free end 01lset outwardly as shown at 25 and extends through. the slot as in the post 6, being disposed above the 23 of lever 20 so that when said bar 26 is depressed the lever will be rocked, the arm 23 being moved downwardly while arm 21 is moved upwardly, thereby forcing the plunger 16 into the cylinder 13 comprising spring 15 therein and elevating the cylinder a sullicient distance to rock shaft 8. This rocking of shaft 8 causes the door 4-0 carried thereby to swing outwardly into upward open position to permit the passage of a car through the doorway. It is, of course, to be understood that the bar 26 which is normally in the position shown at Fig. 2 is depressed by an approaclr ing train which effects the above described operation. After the train passes through the door the spring 15 expands, forcing out the plunger 16, lowering arm 21 of lever 20 and raising its arm 23, ther by elevating bar 26 and setting it ready for actuation again by a train coming in the same direction.

A plate 30 is pivoted at one end to the trackrail R which carries bar 26 but on the side of the post opposite to that on which said bar is pivoted. This plate extends inwardly between post 6 and the track rail R- and at its free end is provided with a finger 31 which extends longitudinally through a slotted depending lug or link 38 carried by the offset 28 of bar 26. capacitates as a retainer to limit upward movement of said bar 26.

A guide 32 is secured to one of the cross ties T outside the track rail on which bar 26 is mounted and flares outwardly at its upper end between which and the track rail the bar 26 is designed to move and which avoids all danger of said bar becoming laterally displaced.

Carried by the post 6 on the opposite side of the track is another lever 20 exactly like the lever 20 above described, said lever having an outwardly and laterally extending arm 21 at its lower end which passes through the lower end of plunger 17 and is secured thereto by a nut 22 The arm 23 of lever 20 eXtends inwardly in front of the post 6 which has a slot 2 formed longitudinally therein for the passage therethrough of the end 25- of a bar 26 corresponding to the bar 26 at the other side of the track. This bar 26 is pivoted at 27* to the track rail R opposite to that which carries bar 26 but on the opposite side of the door so that one of these bars is arranged on one side of the door and the other on the other side, to permit cars approaching in opposite directions to open the door. V

The offset portion 28 of the bar 26 has an aperture through which passes a finger 31 carried by the plate 30 The operation of bar 26 is similar to that of the bar 26 except that it forces the door 40to swing outwardly and upwardly in a direction opposite to that in which it swings when bar 26 is operated. This reverse swinging of the door is caused by the positioning of the cylinders 13 and 14 at oblique angles in opposite directions as is shown clearly in Fig. 1 and the oblique positioning of the arms 9 and 10 in opposite directions, said arms'carrying the cylinders.

Supported; by one of the posts 6 at one side of the track is a door 34: which is intended to be used by the miners and is T 1e plate 3O opened manually by them when passing to and fro.

It will be seen that should the operating mechanism above described for any reason become ineffective the door 40 may be swung manually in either direction to permit a car to pass through without danger of jamming. This is accomplished by merely exerting pressure on either side of door in accoroance with the direction of travel of the car.

From the foregoing description, taken in i nnection with the accompanying drawngs, the advantages of the construction of the method of operation will be eadily apparent to those skilled in the to which the invention appertains and while I have described the principle of op tion of the invention togetherv with the .ice which I now consider to be the best embodiment thereof, I desire to have it understood that the device shown is merely illustrative and that such changes may be made as are within the scope of the claimed invention.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. The combination with a doorway having a door mounted to swing in a vertical plane, depressible members on opposite sides of said doorway located in the path of travel, and connections between saiddmembers and door operated independently on the depression of the respective member to open the door, one of said members being connected with one side of the door and the other with the other side.

2-. The combination with a doorway equipped with a door, a shaft mounted transversely thereof at its upper end and projecting beyond one side thereof, a crank arm on said projecting shaft end, a depressible member located in a path of travel, supporting means for said member held in operative position by the weight of the door when closed, a connection between said supporting means and door comprising a cylinder and a plunger carried one by said supporting means, and the other by said crank arm with a coiled spring in a cylinder to normally force the plunger out, the low-. ering of said depressible member operatlng;

tween the other end of said lever and said crank arm whereby the lowering of the depressible member will operate to open the door.

4. The combination with a doorway equipped with a door, a shaft mounted transversely thereof at its upper end and projecting beyond one side thereof, a crank arm on said projecting shaft end, a depressible member located in a path of travel, a lever fulcrumed intermediate its ends at one side of said doorway and having an arm at one end extending under said depressible member to support said member in elevated position, a plunger carried by the other end of said lever, a cylinder depending from said crank arm in which said plunger operated and a coiled spring between the closed end of said cylinder and said plunger operable to return the parts to normal position when said depressible member is released.

GIUSTO BOGGIO. Witnesses:

EDOABDO CIo'rA, WM. LOVEL, Jr. 

